Comment 2 for bug 1947974

Reviewed: https://review.opendev.org/c/openstack/neutron/+/814868
Committed: https://opendev.org/openstack/neutron/commit/8127221479834350465251839ab88056f4f64fb4
Submitter: "Zuul (22348)"
Branch: master

commit 8127221479834350465251839ab88056f4f64fb4
Author: Rodolfo Alonso Hernandez <email address hidden>
Date: Thu Oct 21 08:49:41 2021 +0000

    Check a namespace existence by checking only its own directory

    To check the existance of a namespace, instead of listing the
    namespaces directory (by default "/var/run/netns"), this patch
    directly checks the existence of the namespace directory, using
    "os.path.exists".

    This check is faster than listing the whole directory and avoids
    timeout problems as reported in the related bug.

    Closes-Bug: #1947974
    Change-Id: I558d50d28378beb3710d98a2113ff9549c82ae17